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Finding the Fourth Proportional to 143,792.10, 215,711.92 and 64,904.58

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Solution

The fourth proportional to 143,792.10, 215,711.92 and 64,904.58 is: 97,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,792.10 : 215,711.92 = 64,904.58 : x
  2. Step 2: Convert to fraction form
    143,792.10/215,711.92 = 64,904.58/x
  3. Step 3: Cross multiply
    143,792.10x = 215,711.92 × 64,904.58
  4. Step 4: Simplify right side
    143,792.10x = 14,000,691,568.59
  5. Step 5: Solve for x
    x = 14,000,691,568.59/143,792.10
  6. Step 6: Final answer
    x = 97,367.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.